Piano-sounding-board press.



E. 0. MOSES. PIANO SOUNDING BOARD PRESS.

APPLICATION FILED 0GT.13,190B.

Patented Mar. 2, 1909.

2 SHEBTS-SHEET 1.

H. O. MOSES I I PIANO SOUNDING BOARD PRESS. APPLICATION FILED 00T.13. 190a.

914,6L. Patented Mar.'2, 1909. 2 SHEETS-SHEET 2.

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Specificationof Letters Patent.

Patented March 2, 1909.

' Application m s October 13, race. strains. 457,533.

i To all whom it may concern:

I I plress for provi mg the spgindmg boardwit its customary oblique r1 s.

combinations of arts, and, each of such combmatrons, an m a lane soundingboard res's embodying t e same, all as hereina ter more particularly described;

The leading obfiect of the invention is to adapt the vertica y-movable follower of the press, and therewith as many pressure-distributing springs-as may be; required, to be quickly and positively raised and lowered by two operatives at the res ective endsof the press, without the ai of retracting s rmgs, and withunlformity of pressure and irect control of the operation.

Another object is to prov1de for putting on I the ribs of the sounding board all at one time,

and with uniform tension and symmetry of arrangement. I

Other objects will be set forth in the'gen- I eral description, which follows.

Two-sheets of drawings accompany this specification as parts thereof. Figure 1 is a top view of the improved press adapted for simultaneously gluing on the oblique ribs of a sounding board; Fig. 2 is a 1 erspective viewef ag e frame, shown in ig. -1,' for locating the ri s u on the sounding board-within the press; ig.. 3 is a perspective view on a larger scale, of one ofthe pressure-distributing, springs detached; Fig.

is'a side elevationof the press represented by E 1, with its follower elevated; Fi 5 is a e view of'the same press with thelollower lowered, showing the ga e frame.

sounding board and ribs within t e press;

and F' and -7 are fragmentary d tail views 8 owing one of the'hand-lev'er eccentrics and theconnections between the same and the follower'on a larger scale; Fig. 6 bein a se'ction'on the line A'-B, :Fig. -7.

- 'ke referehce characters refer to. like parts in allthe figures.

The invention consists in certain novel The i im roved press represented as a whole by *igs. 1, 4 and 5, has a strong bed frame, a, terminating at its top in a horizontal bed, a, a superposed follower, b, of peculiar construction, two pairs of uprights, c c and (Z d, at the res ective ends of the press, rigidly and secure y attached to said ed frame a;. two pairs of hand-lever eccentrics, e e -andff, ivoted between the upper ends of the'severa pairs of uprights; and stirrups, g, connecting each of said hand-lever eccentrics with a subjacent portion of the follower t guided b said uprights.

The follower 11 includes a pair of horizontal beams, 1 and 2, Fig' 1, parallel with each other and with the front and rear sides of the bed frame, having rabbeted ends which are guided by the several uprights cc and (Z 11'. Each of these beams is preferably and conveniently stiliened by means of a super osed truss, '3. A sufficient number of rigi bridge pieces, 4, corresponding in number and arrangement with the ribs of the pattern of sounding board for which the ress is designed, are fixedly attached to the bottoms of. the two beams, and a sufficient number of pressure-distributing springs, 5, are fixedly attached to the lower edges of said brid e pieces, which are preferably arranged ed gewise, as shown in Figs. 4 and 5,

. to give'them the required rigidity.

The pressure-distributing springs 5 are referably of the constructionrepresented Ey Fig. 3, each spring being composed of two thicknesses of suitablev resilient metal,

Withtheir ends curved inward and then upward toward the top of the spring, as clear shown in Fig. 3, and-provided with screw holes, 6 -and'i, Fig. 3, to facilitate their rigid attachment to the bridge pieces by woodscrews.

,Each of the hand-lever eccentrics e and I be described as a hand lever constructe with eccentric laterally projecting flanges, 8 and 9, Fig. 6, an eccentric periphery, 10, Fig. 7, and a concentric hub, v1-1, Fig. 7. Said eccentric flanges and periphery, in common, may be formed by a band of steelattached to the periphery of the body of the hand lever, as represented in Figs. 6 and 7. Each of said stlrrups g, as shown in Figs. 6 and 7, embraces a subjacent end of one of said beams 1 and 2 within a groove, 12, Fig. 7, and interacts with the eccentric flanges, 8 and 9, of the superjacent hand lever e e f or f by a pair of inwardly bent terminal flanges or'lips, 13 and 14, as best shown in Fig. 6. I

. The-follower end may be, and preferably is, provided with a bolster, 15, Figs. 6 and 7, of suitable material, to interact with the eccentric periphery 10 of the superjacent hand lever.

placed on the table a, of the press beneath the elevated follower b, Fig. 4, in proper condition, its glued ribsare symmetrically arranged thereon with the aid of a rectangular gage frame, 7', Figs. 2 and 5, which is constructed with internal notches, 19, Fig. 2, extending vertically from the top frame to its bottom and fitted to the ends of the several ribs, so that when the ribs 18 respectively are drop ed into said notches upon the sounding. oard they are located as desired and kept from displacement. Sto s 20 and 21, attached to the underside of t e frame 1' to contact with the edge of the sounding board 11 on both sides of one of its corners, insure the location of the frame upon the sounding board so as to overla evenly on all sides, or as maybe desire When that operation is completed the several ribs 18 are directly'beneath the bridge pieces 4 corresponding with the several ribs respectively. Two operatives then take their places, face to face, at the respective ends of the press, and, each of them grasping a pair of the hand levers e e and ff, the latter are pulled from the position represented in Fig. 4 to the position represented in Fig. 5, compressing the ressure-distfibuting springs 5 beneath the f d tact with the several ribs 18 as in Fig. 5. In this operation the eccentric peripheries 10 of the hand levers interact with the bolsters 15 of the follower b; the trusses 3 and the tie rods h and h prevent any yielding of the follower beams 1 and 2 and the uprights 0 c and d d; and the pressure-distributing springs 5 equalize the pressure on the ribs 18 at all points so as to insure their attachment with uniform tension, as aforesal A The sounding board 1'. and frame 9' are left in the press until the glue has set, and the operatives then release them by turning the hand levers e e',f and f from the position represented by Fig. 5 to the position represented by Fig. 4. In' this operation the flanges 8 and 9 of each hand lever interact with the lips 13 and 14 of the stirrups g, and

of the llower b in conthe latter interact with the grooved ends of the beams 1 and 2 of the follower b, so as to elevate the latter and free the s rings 5 from the ribs 18. The sounding card i and frame are then removed from the press and the frame is then se arated from the sounding board and its ribs, leaving the product ready for use.

It will be obvious that presses for other sounding-board gluing operations may be constructed on the same principles in part;

known or improved substitutes for details of construction which are not essential to the res ective combinations of arts hereinafter 0 aimed may be employe' in the construction of the improved press; and other like modifications will suggest themselves to those skilled in the art.

Having thus described said improvement, I claim as my invention, and desire to patent under this specification:

1. The combination, in a piano soundin board gluing ress, of a vertically movab e follower inclu ing a trussed horizontal beam,

a number of sub acent pressure-distributing springs movable with said'follower and arranged to contact with the work, a pair of uprights at each; end of'said beam, a hand lever ivoted between the up erends of a pair of said uprights at each end of said beam and constructed with a double-acting eccentric having laterally projecting eccentric flanges, an eccentric periphery and a concentric hub, means connecting said eccentries with said beam, and a tie rod having loops at its extremities embracing said hubs,

of the eccentrics.

2. The combination, in a piano sounding board gluing ress, of a vertically movable follower inclu ing a pair of horizontal beams side by side and SllbJitCBIlt rigid bridge pieces connecting said beams, a number of subjacent pressuredistributin springs attached to sald bridge pieces an arranged to contact with the work, uprights at the res ective ends of the press forming guides 'or the respective beams and supporting'horizontal ivots above the beam ends, a pair of'hand.

evers at each end of the press movable on said pivots and each constructed with a double-acting eccentric having laterally projecting eccentric fiangesand an eccentric.

periphery, and a stirrup interacting with said flanges of each eccentric and embracing the subjacent end of one of said beams.

3. A piano sounding-board gluing press having, in combination, a horizontal bed for supporting the work, a superposed vertically movable follower including a horizontal beams side by side and sufijacent bridge pieces corres ondingin number and arrangement with t e ribs of the sounding board, a number of subjacent pressuredistributing springs attached to sand bridge pieces and arranged to contact with the air of res ective ribs of the sounding board, uprig ts at the respective ends of the ress forming guides for both ends of each 'earn and supporting horizontal pivots above the beam ends, a pair of handlevers at each end of the press movable on said pivots and each constructed with laterally projecting eccen trio flanges and an eccentric periphery, and stirrups interacting With said flanges -of the several coneentries and embracing the subjacent ends of said beams, said ends of the beams being constructed and arranged to interact also with the peripheries of the respective superjacent eccentrics.

4. A iano sounding-board gluim press having, 1n combination, a horizontal bed for supporting the Work, a super osed rectangular gage frame constructe with internal notches extending vertically through its top and bottom and ada ted to locate the ribs 0 individually upon tie soundin board, a superposed vertically movable follower including horizontal beams side by side and subjacent bridge pieces corresponding in number and arrangement with the ribs of. the sounding board, subjaeent uressuredistributing springs attached to sac of said bridge pieces and arranged to contact with the several ribs of the sounding board, and

means for depressing said follower to simul- 3o 'taneously and uniformly press the several ribs into. eifective luing contact with the sounding board, s lostantially as hereinbefore specified.

' ENOCH C. MOSES. Witnesses:

H. S. Dow, EDITH A. Dow. 

